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516:… around the frequency 1805.7 MHz. … reflector measures approx. 60x20x2 mm. … all objects containing a diode and a metallic structure will react in the same way as the RECCO reflector. … for example if they have a digital camera or a cell phone (no difference if they are switched on or off). … In Europe, several people have been rescued alive even though they were not wearing any RECCO reflectors, but only carrying some other electronic device like a camera, an MP3 player or similar … maximum distance for detecting an avalanche victim, wearing a RECCO reflector, is around 20‒40 meters.
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The RECCO SAR helicopter detector is designed for a large-scale search by professional rescue teams for missing persons in open terrain. The missing person must be equipped with a RECCO rescue reflector to be located by the detector signal. The SAR detector can search from a height of 100 meters and
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More than 700 rescue groups worldwide, predominantly in ski resorts, used the technology. The professional rescue teams use RECCO detectors as an electronic search method in addition to the avalanche transceiver to find victims in an avalanche. RECCO equipment is included in textbooks on rescue, and
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The detector sends out a highly directional radar signal. If the signal hits a reflector it is echoed back to the detector. The returned signal is translated into an audio tone if the detector is pointed in the direction of a reflector. Judging from the audio tone a trained professional rescuer can
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To investigate the logistics of harmonic radar use in the field, we obtained a RECCO transmitter/receiver … unit in May 2000 for $ 7,500. The RECCO unit uses a 5-element yagi antenna for transmission and a 4-element patch array for reception … the 5-element yagi antenna … transmits the initial 917
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RECCO detector's transmitter uses the frequency 902.85 MHz … used for example by the "Intelligent
Transportation Systems Radio Service". … In Europe, the RECCO detector uses the frequency 866.9 MHz … reflectors are the same all over the world. … pulsed radio signal at 20% duty cycle and the RECCO
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Based on the harmonic radar system, the RECCO rescue technology consists of two parts: a passive and lightweight reflector and a portable detector. The reflector is worn by the person and directly integrated in the clothing or gears. The detector is used by professional rescue teams on avalanche
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The signal from the detector can also weakly be reflected from other electronic devices, such as cameras and cell phones, as well as metallic objects. However, even if this effect has allowed the rescue of several buried people who were not carrying a reflector, the search range of those others
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covering a search area of approximately 100 meters wide. The principle of locating a victim is the same as for the handheld detector with the detector sending a radar signal echoed back by the reflector. If receiving a returned signal, the rescuer can locate the lost individual.
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According to the company, people totally buried by an avalanche were located using the technology in fifteen incidents during 2005–15. A case report of a live rescue of a buried off-piste skier using RECCO equipment that occurred in Spain in 2015 has been published in the
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The reflector is a passive transponder, which does not require batteries or activation, consisting of a diode and an antenna. Its dimensions are 13 mm × 51 mm × 1.5 mm and it weighs 4g. The company suggests that two reflectors in different locations are ideal.
251:, its signal can locate RECCO reflectors within a range up to 80 meters through air and 20 meters through packed snow, depending on various factors such as the snow conditions and depth.
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system is "silent" 80% of the time (it repeatedly transmits for 20 milliseconds and is silent for 80 milliseconds). … the reflector will re-radiate a signal power of approximately 10
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Granhed formed RECCO AB in 1983 and created the first functional prototype. In 1987, a woman was localised with the RECCO rescue technology from a helicopter in
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More than 150 brands integrate RECCO reflectors into their outdoor gear, including ski boots, helmets, hiking shoes, jackets, pants and backpacks.
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In 2015, RECCO introduced the RECCO SAR Helicopter detector that expands the technology to finding a missing person in other outdoor environments.
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165:, in 1973. Starting in the winter of 1978–1979, Granhed collaborated with Bengt Enander's team at the Department of Electromagnetic Theory,
381:. The system allows researchers to track small frogs in their natural habitat. During 2000‒2004 RECCO equipment was tested for tracking
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The RECCO rescue technology was developed by Magnus
Granhed, in response to his personal experience with a fatal avalanche accident in
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determine the location of a buried victim. Due to the diode, the returned signal is doubled in frequency - harmonic radar.
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is a rescue technology used by organised rescue teams as an additional tool to more quickly locate people buried by an
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348:. The authors commented that the technology was poorly studied compared with some other avalanche safety methods.
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MHz signal. … the operator holds the second 4-element antenna that receives the 1834 MHz reflected signal.
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Grasegger, Katharina; Stapazzon, Giacomo; Procter, Emily; Brugger, Hermann; Soteras, Inigo (June 2016).
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system and composed of a detector and a passive reflector integrated into outdoor clothing and gears.
757:"This company says its reflector system could help search and rescue teams find lost hikers faster"
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and receiving at twice the frequency. The detector works by transmitting at one frequency on a 20%
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643:"Recco To Debut New Technology At Summer Outdoor Retailer + Outdoor By ISPO Trade Shows"
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802:"Tracking the tiny: Harmonic direction finders aid study of small amphibians"
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445:"Avalanche Survival After Rescue With the RECCO Rescue System: A Case Report"
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O'Neal, M.E.; Landis, D.A.; Rothwell, E.; Kempel, L.; Reinhard, D. (2004).
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597:"How RECCO's latest innovation helps everyone going into the backcountry"
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and listening for a harmonic reflection at double the frequency.
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The R9 detector, released in 2009, weighs 900 grams. During a
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a RECCO reflector is included among measures recommended by the
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to develop an avalanche rescue system, using the principle of
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The RECCO technology has also been applied to tracking some
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Short-range portable detectors are used, transmitting via a
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783:"One Simple Signal Sets Off a Complicated Frog Journey"
188:, in the first live rescue found using the technology.
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696:"Transponder Designs for Harmonic Radar Applications"
821:"Tracking Insects with Harmonic Radar: a Case Study"
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145:or lost in the outdoors. The system is based on a
700:International Journal of Antennas and Propagation
622:"7 Points To Explain The RECCO Rescue Technology"
346:Journal of Wilderness and Environmental Medicine
403:"Fredrik Steinwall Appointed New CEO For RECCO"
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227:RECCO reflector integrated in the pants
203:Integrated RECCO reflector on a jacket
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208:site, by foot or from a helicopter.
16:For the town in Ligure, Italy, see
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495:Granhed, Magnus (2015-09-03).
117:RECCO detectors and reflectors
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896:1983 establishments in Sweden
355:RECCO SAR helicopter detector
167:Royal Institute of Technology
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462:10.1016/j.wem.2016.02.004
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891:Mountaineering equipment
274:RECCO radio frequencies
502:(Report). pp. 1‒4
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828:American Entomologist
789:. The New York Times.
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239:The handheld detector
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647:snowindustrynews.com
377:species, especially
840:10.1093/ae/50.4.212
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677:"RECCO® Technology"
576:HUSKY INTERNATIONAL
497:Petition for Waiver
326:Rescue applications
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256:directional antenna
102:Fredrik Steinwall (
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369:Other applications
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529:"The RECCO Story"
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249:search and rescue
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23:Rescue technology
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881:Skiing in Sweden
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861:Recco AB Website
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73:Headquarters
741:27 February
606:27 February
186:Switzerland
182:Lenzerheide
88:Area served
870:Categories
761:nsnews.com
506:2021-10-18
389:References
314:1805.7 MHz
309:902.85 MHz
299:1733.8 MHz
268:duty cycle
195:The system
98:Key people
48:Technology
681:recco.com
558:recco.com
514:nanowatts
375:amphibian
294:866.9 MHz
260:866.9 MHz
171:Stockholm
143:avalanche
130:recco.com
92:Worldwide
806:Mongabay
787:NY Times
629:kuhl.com
471:27116920
285:Receive
282:Transmit
279:Location
111:Products
41:Industry
27:RECCO AB
766:28 July
706:: 1–9.
652:19 June
153:History
125:Website
77:Lidingö
65:Founder
57:Founded
737:. 2015
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290:Europe
163:Sweden
81:Sweden
824:(PDF)
731:(PDF)
625:(PDF)
500:(PDF)
139:RECCO
18:Recco
768:2019
743:2021
704:2015
654:2019
608:2019
467:PMID
60:1983
836:doi
708:doi
457:doi
258:at
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169:in
159:Åre
104:CEO
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